The Patek Philippe 5327G is a perpetual calendar luxury watch for connoisseurs of traditional craftsmanship and complicated watchmaking. Launched at Baselworld 2016, the 5327G perpetual calendar is the successor to the Patek Philippe 5140.

The 39mm white gold watch from Patek Philippe's "Grand Complications" collection is the very image of a "Calatrava" style and ultra thin watchmaking.

Patek Philippe's 5237G-001 is an 18-karat white gold (grey gold) perpetual calendar that jumps to attention thanks to a rich blue sunburst dial that rivals the best from established rivals like Vacheron Constantin and upstarts like FP Journe. Applied white gold Arabic numerals in the style of "Breguet" numerals grace a dial that is built around its complication displays.

Patek Philippe's perpetual calendar display is simple, symmetrical, and handsome. The day, date, month, moon phase, leap year cycle, and 24-hour (danger zone) indicator occupy three co-axial sub dials at three o'clock, six o'clock, and nine o'clock.

Inside the case, Patek Philippe automatic caliber 240 Q features a 48-hour power reserve. The in house movement incorporates a 22-karat gold micro rotor for winding, a beat rate of 21,600 vibrations per hour, and immaculate finish that includes cotes de Geneve, perlage engine turning, mirrored anglage chamfers, and black polished screws.

A Gyromax free sprung balance and silicon "Spiromax" hairspring help the watch to excel through six position adjustment. Patek Philippe guarantees a precision of -3/+2 seconds per day or better.

The perpetual calendar system requires no adjustment until the year 2100 if worn continuously. Its mechanical computation is programmed to account for irregular length months, leap years, and February 29th.